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Fire Weather Index

Recorded at Solar Noon
Forecast is for hottest time of day, 2-4 PM

Wild Fire Risk
EXTREME FIRE DANGER IS FORECAST
Fires start quickly, spread furiously, and burn intensely. All fires are potentially serious. Development into high intensity burning will usually be faster and occur from smaller fires than in the very high fire danger class. Direct attack is rarely possible and may be dangerous except immediately after ignition. Fires that develop headway in heavy slash or in conifer stands may be unmanageable while the extreme burning condition lasts. Under these conditions the only effective and safe control action is on the flanks until the weather changes or the fuel supply lessens.
FWI - Details and History

FIRE BEHAVIOUR:
Fire Weather Index ... EXTREME (47)
Initial Spread .......... VERY HIGH (13)
Build Up Index ........ EXTREME (427)

FUELS MOISTURE:
Fine Fuel Moisture .. EXTREME (97)
Duff Moisture ......... EXTREME (322)
Drought ................ EXTREME (1591)

FIRE DANGER CODES (FFDC, SFDC, GFDC)


The FWI is further refined into indices that represent the Fire Intensity likely in the three vegetation types (Forest, Scrub & Grasses). These three codes are divided into five fire danger classes (Low, Moderate, High, Very high & Extreme) and calculate the fire intensity in kilowatts per square metre (kw/m^2).

FOREST ................ EXTREME, (16902)
Based on predicted generated "fire intensity (kw/m^2)" in highly flammable forest type vegetation (conifer, eucalypt). This code denotes how difficult it would be to control a fire in this vegetation type should one start.
SCRUB ................. EXTREME, (23631)
Based on predicted generated "fire intensity (kw/m^2)" in flammable scrub type vegetation (tea tree, broom, gorse, manuka). This code denotes how difficult it would be to control a fire in this vegetation type should one start.
GRASS.................EXTREME, (4424)
Based on predicted generated "fire intensity (kw/m^2)" in grass type vegetation (dry grass, tussock). This code denotes how difficult it would be to control a fire in this vegetation type should one start.

Regional Fire Risk Assessment

Hourly Fire Risk Red Flag Warnings

National Fire Risk Assessment

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National Fire Risk National Fire Risk

SANTA ANA WILDFIRE THREAT INDEX

Drought/Rain

ElementValueDescription
Drought (FWI) 1591 Drought: Extreme
Rain Today0.00
Rain Month0.00
Rain Year0.13From July 1
Days No Rain24Days
Record No Rain124Days (Station records 2004 to Present)
Last Rain9/21/2017